Table of Contents
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A
/G
R
C
IR
AS
ATIO
ONTROLS
GIK, GIK..B
Technical Information
T-Product 2004 November
For maintaining constant gas/air ratios
Cross-connected operation with modulating or
high-low control of nozzle mix burners
Zero regulator operation for premix burners
Precise pressure regulation over wide turndown
ranges
Low maintenance
Valve seat design for consistent low fire repeatability
Balanced double diaphragm design allows regula-
tor to operate over a wide range of inlet pressures
while minimally affecting outlet pressure
CE certified models available
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Table of Contents
Related Manuals for Krom Schroder GIK Series
Summary of Contents for Krom Schroder GIK Series
- Page 1 ATIO ONTROLS GIK, GIK..B Technical Information T-Product 2004 November For maintaining constant gas/air ratios Cross-connected operation with modulating or high-low control of nozzle mix burners Zero regulator operation for premix burners Precise pressure regulation over wide turndown ranges Low maintenance Valve seat design for consistent low fire repeatability Balanced double diaphragm design allows regula- tor to operate over a wide range of inlet pressures...
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Page 2: Table Of Contents
Table of Contents Table of Contents ......2 Application ......3 Nozzle Mix Burner . -
Page 3: Application
Application Nozzle Mix Burners with High-Low Control, including Pulse Firing GIK Regulators hold constant gas/air ratios as cross- connected ratio regulators with modulating or high-low control of nozzle mix burners or as zero governors on GIK..B Flexible Gas premix systems. Connection Orifice When used as cross-connected regulator for nozzle mix... -
Page 4: Nozzle Mix Burner
Application Nozzle Mix Burner Premix Burners The cross connection line should be no smaller than 1/4” To Other Zones pipe or 3/8” OD tubing, as short and with a few bends Motorized Zone as possible. Air Control Valve Mixer Burner See installation instructions for other recommenda- tions. -
Page 5: Specifications
Specifications Operating Limits Type of gas: Natural, LPG, clean coke oven gas and clean biogas Ambient temperature range: GIK ½” to 2” = -4 °F to 158 °F (-20 °C to 70 °C) GIK 2½” to 4” = 5 °F to 140 °F (-15 °C to 60 °C) Maximum inlet pressure: 3 psig (200 mbar) Maximum operational inlet-... -
Page 6: Dimensions And Weights
Dimensions and Weights ¼ NPT ½ NPT øD øD GIK 15 – 50TN GIK 65 – 100TA Type Connection max. inlet Dimensions Flange Drilling Weight pressure psig mbar inch inch inch inch inch inch inch GIK 15TN NPT ½" 200 4.72 120 5.28 134 1.34 5.20 132 –... -
Page 7: Sizing
Sizing regulator should be about 10" WC. If the inlet pres- sure is considerably less than what’s needed, try to Selection obtain higher supply pressure. If this isn’t possible, For premix and modulating control of nozzle mix burn- use a lower pressure drop across the regulator, but ers, select the GIK. -
Page 8: Bypass Sizing
Sizing 3. On the sizing chart, find where the corrected flow in- Bypass screw GIK..B tersects the pressure drop from Step 1. Move down GIK 15–25..B GIK 40–50..B from this point. The first regulator curve you come to is the size to use. inch (mm) Ø... -
Page 9: Installation
Installation WARNING: Improper installation, adjustment, modifi- cation, operation or maintenance could lead to injury or damage. All adjustments must be made by a qualified technician. Wiring must comply with local codes and National Electrical Codes. To prevent the posibility of property damage, turn off electrical power, depressurize instal- lation, vent fluid to safe area before servicing. -
Page 10: How To Install The Air Control Line
Installation How to install the air control line GIK ½” to 4” The connection of the air control line must be at a distance of 5 × nominal Diameter from other air control elements. Connection of the air control line GIK ½”... -
Page 11: Operation
Operation To adjust the low fire position at GIK • Set the high fire rate using re- stricting orifices or adjustment element on the burner • At low fire position: Control pres- sure at least 0.2 “WC (0,5 mbar). • Factory setting without Bypass: −... -
Page 12: To Adjust The Low Fire Position At Gik
Operation Bypass screw GIK..B GIK 15–25..B, The bypass screws GIKH 25..B GIK 40–50..B GIK 15–25..B GIK 40–50..B and the housing have had markings since November inch (mm) Ø 2000. Only marked screws may be used with marked ø housings. 8 10 40 50 60 80 100 300 400 500... -
Page 13: Special Features Conversion Kit For Zero
Special Features Conversion Kit for zero Pressure GIK..N Order No.: 03351039 GIK..A Order No.: 74910853 T-Product · GIK, GIK..B · 2004 November... -
Page 14: Function
Function The GIK has 4 basic elements that allow to operate. Valve seat Compensating These are: Diaphragm 1 Valve seat Internal or ex- ternal Impuls A valve seat or orifice through which the gas supply will flow. This has a disc or plug that can close against the seat to limit the flow of gas. -
Page 15: Order Information
Order Information air/gas ratio regulator 15 – 100 (½" to 4") nominal diameter T-product ANSI-flanged NPT-internal thread max. inlet pressure 3 psig (200 mbar) screw plug at the inlet and outlet pressure test point at the outlet with drilled bypass screw Designation Order no. -
Page 16: Trouble Shooting
Trouble Shooting Trouble Shooting is a term used to indicate a systematic approach to locate regulator malfunction. As with installa- tion and maintenance, successful regulator troubleshoot- ing depends on careful analysis and planning before taking action. Regulators are relatively simple devices with few faults. -
Page 17: Gas/Air Ratio Is Not 1:1 At High Fire
Trouble Shooting Gas/Air ratio is not 1:1 at high fire – For example: Gas outlet Pressure at low fire the air control pressure is Ideal characteristic Curve 2" WC (5 mbar), the gas outlet pressure is also 2" WC (5 mbar) at high fire the air pressure is 40"... -
Page 18: Maintenance
Maintenance 8 Clean all parts of the body and casings. 9 Check the diaphragms and replace if necessary. All regulators which control the systems pressure are subject to periodic servicing by authorized personnel. 10 Clean the regulator valve. If it has a rubber seat, check and replace if necessary. -
Page 19: Spare Parts
Spare parts Spare parts GIK ½" to 2" Spare part kit (1) contains the diaphragms and o- rings. Type For Gas For Air GIK 15 03089204 03089201 GIK 20 03089204 03089201 GIK 25 03089204 03089201 GIK 40 03089205 03089202 GIK 50 03089206 03089203 T-Product ·... -
Page 20: Spare Parts Gik 2½" To 4
Spare parts Spare parts GIK 2½" to 4" Pos. Description GIK 65 GIK 80 GIK 100 (2½") (3") (4") O-ring 03109276 03109277 03109277 O-ring 03110203 03109170 03109232 Valve train 74960325 74960024 74960316 Compensating diaphragm 35454179 34328850 35442690 Working diaphragm 34328846 34328856 34212875 Safety diaphragm 74324141 74324291 74324201 O-ring... -
Page 21: Contact
Warning Situations dangerous to personnel and property can result from the misapplication and incorrect operation of combustion equipment. Kromschroder advises compliance with the National Fire Protection Association standards that apply for related equipment and Insurance Underwriters recommendation, and care of operation. We reserve the right to make technical changes designed to improve our products without prior notice.
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